Photo © Glynne Evans

Yponomeuta irrorella

Checklist Number
16.006 [B&F: 0429]

Verification
Record will require further evidence, at least a good photograph, unless CMR is aware recorder has confidence in identification

Classification

Family:Yponomeutidae
Subfamily:Yponomeutinae
Genus:Yponomeuta
Species:irrorella
Authority:(Hübner, 1796)

Vulnerable (proposed as a future Red Data Book species) and recorded only from woodland on chalky soils in parts of Hampshire and Kent. Very local and occasional in Hampshire, first recorded in 2001 when nine were trapped on The Moors Local Nature Reserve, Bishop's Waltham. Not recorded again until 2008, when an individual was recorded to light in the New Forest, with another the following year from Longstock in the Test valley. However, since 2020 this species has become regular in small numbers, the majority again from sites in the Test valley; the reason for this uptick in reports is not clear - it may previously have been a rare migrant from the continent which has now become established; it has not been recorded from the Isle of Wight to date. Wingspan 19-25 mm. Larva feeds on Spindle, living within a silken web.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)

No Larval records to show.

VC11 South Hampshire

Site Date Quantity Recorder Stage
The Moors NR, Bishop's Waltham (SU51)27/07/2001nineRichard J DicksonAdult
Ashurst, NF (SU31)26/07/2008oneKeith GodfreyAdult
Dibden Purlieu (SU40)25/06/2020oneRobert A ChapmanAdult
Romsey (SU32)14/07/2021oneNigel R JonesAdult
Marchwood (SU30)24/07/2021oneChris ThainAdult
Broughton (SU33)25/07/2021oneGlynne EvansAdult
Crawley (SU43)04/08/2021oneGlynne EvansAdult

VC12 North Hampshire

Site Date Quantity Recorder Stage
Leckford Estate (SU33)15/07/2009oneGlynne EvansAdult
Barton Stacey (SU44)25/06/2020oneGlynne EvansAdult
Cholderton (SU24)17/07/2020oneTim Norriss, Henry EdmundsAdult
Anna Valley, Andover (SU34)07/07/2023threeTim NorrissAdult
Wherwell (SU33)18/07/2023oneGlynne EvansAdult
Overton (SU54)19/07/2023sixAlison CrossAdult
Chilbolton (SU33)23/07/2023oneGlynne EvansAdult